PREVENT Calculator — 10 & 30-Year Cardiovascular Risk

How this calculator works

PREVENT ("Predicting Risk of cardiovascular disease EVENTs") is the American Heart Association's new risk model, published in 2023 and adopted by the 2026 ACC/AHA dyslipidemia guideline as the preferred risk tool. It replaces the classic 2013 ASCVD calculator. You get your probability of cardiovascular disease over 10 and 30 years — broken down into heart attack/stroke and heart failure — plus a clear picture of which modifiable factors move it.

What's new vs the classic ASCVD calculator (PCE 2013)

PREVENT is the modern successor to the 2013 Pooled Cohort Equations. Six key differences: (1) it removes race as an input — your risk no longer depends on a racial coefficient; (2) it adds kidney function (eGFR) and BMI, recognizing the cardiovascular-kidney-metabolic axis; (3) it extends the age range down to 30 (validated 30-79, vs 40-79 for ASCVD); (4) it predicts both 10-year AND 30-year risk; (5) it estimates total cardiovascular disease and breaks it down separately into heart attack/stroke and heart failure; (6) it was derived on 3.3 million contemporary adults versus ~25,000 in the historical ASCVD cohorts, so it calibrates far better in today's population.

Formula and origin

We use the base model of the PREVENT equations published by Khan et al. in Circulation (2023), derived and validated on over 3.3 million contemporary US adults from 25 cohorts and datasets. It is a sex-specific logistic model combining age, total and HDL cholesterol, systolic blood pressure, antihypertensive treatment, statin use, diabetes, smoking, kidney function (eGFR) and BMI. It computes three outcomes — total cardiovascular disease, ASCVD (heart attack and stroke) and heart failure — over two horizons: 10 and 30 years.

Risk categories (ACC/AHA thresholds)

• Low (<5%): Lifestyle focus; reassess in 4-6 years. No statin indication.
• Borderline (5–7.5%): Consider risk enhancers (family history, hsCRP, coronary artery calcium score). Shared decision with your physician.
• Intermediate (7.5–20%): Statin discussion recommended. Coronary calcium score can refine the decision if uncertain.
• High (≥20%): Statin therapy recommended. Aggressive lifestyle and risk-factor modification.

How to lower your risk (evidence-based)

• Quit smoking: Cuts cardiovascular risk ~50% within 1-2 years. — Arnett 2019, AHA
• Control blood pressure: Lowering systolic by 10 mmHg reduces major CV events ~20%. — Whelton 2017
• Lower LDL by ~30 mg/dL: Relative event reduction ~22% (lifestyle + statin if indicated). — Grundy 2018
• Lose weight / lower BMI: Acts on PREVENT's heart-failure component — BMI enters the equation directly. — Khan 2023
• Aerobic physical activity: 150 min/week moderate intensity reduces CV mortality ~30%. — Arnett 2019